Arthur P. Ramirez, Ph.D. - Publications

Affiliations: 
Physics University of California, Santa Cruz, Santa Cruz, CA, United States 
Area:
Geometrical frustration, low-temperature transport, magnetism
Website:
http://news.ucsc.edu/2009/04/2896.html

157 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2020 Hu C, Gordon KN, Liu P, Liu J, Zhou X, Hao P, Narayan D, Emmanouilidou E, Sun H, Liu Y, Brawer H, Ramirez AP, Ding L, Cao H, Liu Q, et al. A van der Waals antiferromagnetic topological insulator with weak interlayer magnetic coupling. Nature Communications. 11: 97. PMID 31911588 DOI: 10.1038/S41467-019-13814-X  0.421
2020 Converse ES, Li J, Haskel D, LaBarre PG, Ramirez AP, Subramanian MA. Os Instability in the Pyrochlore Structure: TlBiOsO. Inorganic Chemistry. PMID 31909983 DOI: 10.1021/Acs.Inorgchem.9B02939  0.356
2020 Xing J, Feng E, Liu Y, Emmanouilidou E, Hu C, Liu J, Graf D, Ramirez AP, Chen G, Cao H, Ni N. Néel-type antiferromagnetic order and magnetic field–temperature phase diagram in the spin- 1 2 rare-earth honeycomb compound YbCl 3 Physical Review B. 102: 14427. DOI: 10.1103/Physrevb.102.014427  0.468
2020 Pathirana VH, LaBarre PG, Li J, Ramirez AP, Subramanian MA. Ambient pressure synthesis and characterization of layered honeycomb Li2PdO3 Solid State Communications. 319: 114011. DOI: 10.1016/J.Ssc.2020.114011  0.338
2020 Duell BA, Li J, LaBarre PG, Zhang JJ, Hermann RP, Ramirez AP, Subramanian MA. Structure and electronic properties of CaAl12−xFexO19 hibonites Journal of Solid State Chemistry. 291: 121650. DOI: 10.1016/J.Jssc.2020.121650  0.375
2020 Medina E, Pathirana VH, Li J, Ramirez AP, Subramanian MA. Tetrahedral Mn4+ as chromophore in sillenite-type compounds Journal of Solid State Chemistry. 289: 121463. DOI: 10.1016/J.Jssc.2020.121463  0.361
2020 Pathirana VH, LaBarre PG, Li J, Ramirez AP, Subramanian MA. Honeycomb Li2Ru1-xRhxO3 solid solution: Structure and electronic properties Journal of Solid State Chemistry. 282: 121061. DOI: 10.1016/J.Jssc.2019.121061  0.346
2019 LaBarre PG, Dong L, Trinh J, Siegrist T, Ramirez AP. Evidence for undoped Weyl semimetal charge transport in Y2Ir2O7. Journal of Physics. Condensed Matter : An Institute of Physics Journal. PMID 31581141 DOI: 10.1088/1361-648X/Ab4Aaf  0.614
2019 Schaller D, LaBarre PG, Besara T, Henderson A, Wei K, Bucher E, Siegrist T, Ramirez AP. Mini volume collapse as evidence for a three-body magnetic polaron in Sm1−xEuxS Physical Review Materials. 3. DOI: 10.1103/Physrevmaterials.3.104602  0.451
2019 Trinh J, Schaller D, LaBarre PG, Schlenker K, Miller JS, Ramirez AP. Quantum criticality and entropy transfer in spin chains and planes—Pyridine oxide copper salts Aip Advances. 9: 125329. DOI: 10.1063/1.5130403  0.673
2019 Davenport JL, Ge Z, Liu J, Nuñez-Lobato C, Moon S, Lu Z, Quezada-Lopez EA, Hellier K, LaBarre PG, Taniguchi T, Watanabe K, Carter S, Ramirez AP, Smirnov D, JV. Probing the electronic structure of graphene near and far from the Fermi level via planar tunneling spectroscopy Applied Physics Letters. 115: 163504. DOI: 10.1063/1.5118422  0.327
2018 Trinh J, Mitra S, Panagopoulos C, Kong T, Canfield PC, Ramirez AP. Degeneracy of the 1/8 Plateau and Antiferromagnetic Phases in the Shastry-Sutherland Magnet TmB_{4}. Physical Review Letters. 121: 167203. PMID 30387620 DOI: 10.1103/Physrevlett.121.167203  0.677
2018 Wallace MK, LaBarre PG, Li J, Pi ST, Pickett WE, Dessau DS, Haskel D, Ramirez AP, Subramanian MA. Local Moment Instability of Os in Honeycomb LiOsO. Scientific Reports. 8: 6605. PMID 29700362 DOI: 10.1038/S41598-018-25028-0  0.403
2018 Ge L, Flynn J, Paddison JAM, Stone MB, Calder S, Subramanian MA, Ramirez AP, Mourigal M. Erratum: Spin order and dynamics in the diamond-lattice Heisenberg antiferromagnets CuRh2O4 and CoRh2O4 [Phys. Rev. B 96 , 064413 (2017)] Physical Review B. 98. DOI: 10.1103/Physrevb.98.219901  0.53
2018 Sleight AW, Ramirez AP. Disappearance of the metal-insulator transition in iridate pyrochlores on approaching the ideal R 2 Ir 2 O 7 stoichiometry Solid State Communications. 275: 12-15. DOI: 10.1016/J.Ssc.2018.03.006  0.342
2018 Chandra P, Coleman P, Flint R, Trinh J, Ramirez A. Implications of the measured angular anisotropy at the hidden order transition of URu2Si2 Physica B: Condensed Matter. 536: 145-149. DOI: 10.1016/J.Physb.2017.09.129  0.653
2017 Giampaoli G, Li J, Ramirez AP, Sleight AW, Subramanian MA. Bi2-xCaxIr2O6+y Pyrochlore Phases: Structure and Properties with Varied Ir Oxidation State from 3.9+ to 4.3. Inorganic Chemistry. PMID 28379005 DOI: 10.1021/Acs.Inorgchem.7B00345  0.396
2017 Ge L, Flynn J, Paddison JAM, Stone MB, Calder S, Subramanian MA, Ramirez AP, Mourigal M. Spin order and dynamics in the diamond-lattice Heisenberg antiferromagnets CuRh2O4 and CoRh2O4 Physical Review B. 96. DOI: 10.1103/Physrevb.96.064413  0.604
2017 Dun ZL, Trinh J, Lee M, Choi ES, Li K, Hu YF, Wang YX, Blanc N, Ramirez AP, Zhou HD. Structural and magnetic properties of two branches of the tripod-kagome-lattice familyA2R3Sb3O14(A= Mg, Zn;R= Pr, Nd, Gd, Tb, Dy, Ho, Er, Yb) Physical Review B. 95. DOI: 10.1103/Physrevb.95.104439  0.668
2017 Blanc N, Trinh J, Dong L, Bai X, Aczel AA, Mourigal M, Balents L, Siegrist T, Ramirez AP. Quantum criticality among entangled spin chains Nature Physics. 14: 273-276. DOI: 10.1038/S41567-017-0010-Y  0.643
2017 Flynn J, Li J, Ramirez AP, Subramanian MA. The effect of iridium oxidation state on the electronic properties of perovskite-type solid solutions: Ba 2–x La x InIrO 6 and BaLaIn 1–y Ca y IrO 6 Journal of Solid State Chemistry. 247: 53-59. DOI: 10.1016/J.Jssc.2016.12.017  0.365
2016 Trinh J, Brück E, Siegrist T, Flint R, Chandra P, Coleman P, Ramirez AP. Thermodynamic Measurement of Angular Anisotropy at the Hidden Order Transition of URu_{2}Si_{2}. Physical Review Letters. 117: 157201. PMID 27768324 DOI: 10.1103/Physrevlett.117.157201  0.663
2016 Dun ZL, Trinh J, Li K, Lee M, Chen KW, Baumbach R, Hu YF, Wang YX, Choi ES, Shastry BS, Ramirez AP, Zhou HD. Magnetic Ground States of the Rare-Earth Tripod Kagome Lattice Mg_{2}RE_{3}Sb_{3}O_{14} (RE=Gd,Dy,Er). Physical Review Letters. 116: 157201. PMID 27127982 DOI: 10.1103/Physrevlett.116.157201  0.672
2016 Flynn J, Li J, Sleight AW, Ramirez AP, Subramanian MA. Structure and Properties of Ir-Containing Oxides with Large Spin-Orbit Coupling: Ba2In2-xIrxO5+δ. Inorganic Chemistry. PMID 26937777 DOI: 10.1021/Acs.Inorgchem.5B02501  0.431
2016 Sandhya Kumari L, Wallace M, Barnes JT, Tong B, Ramirez AP, Subramanian MA. Charge transfer instability in a mixed Ir/Rh honeycomb lattice in Li2Ir1−xRhxO3 solid solution Solid State Sciences. 61: 232-238. DOI: 10.1016/J.Solidstatesciences.2016.10.001  0.39
2014 Ramirez AP. Superconductivity in alkali-doped C60 Physica C: Superconductivity and Its Applications. DOI: 10.1016/J.Physc.2015.02.014  0.345
2013 Fei H, Laforge AD, Onyango TM, Robins JC, Zavalij PY, Ramirez AP, Oliver SRJ. Synthesis and magnetic properties of a 3-D nickel hydroxide capped by succinate Journal of Materials Chemistry C. 1: 1099-1104. DOI: 10.1039/C2Tc00428C  0.42
2013 Grajczyk R, Chan A, Ramirez AP, Subramanian MA. Structural and magnetic investigation of In2Fe 2-xGaxCuO7 Journal of Solid State Chemistry. 204: 213-218. DOI: 10.1016/J.Jssc.2013.06.005  0.417
2009 Melot BC, Drewes JE, Seshadri R, Stoudenmire EM, Ramirez AP. Magnetic phase evolution in the spinel compounds Zn(1-x)Co(x)Cr(2)O(4). Journal of Physics. Condensed Matter : An Institute of Physics Journal. 21: 216007. PMID 21825572 DOI: 10.1088/0953-8984/21/21/216007  0.423
2009 Mizoguchi H, Zakharov LN, Ramirez AP, Marshall WJ, Sleight AW, Subramanian MA. New A2/3-xRh2O4 compounds with the CaFe2O4 structure where A is a rare earth or Bi. Inorganic Chemistry. 48: 204-8. PMID 19049419 DOI: 10.1021/Ic801603T  0.337
2009 Melot BC, Tackett R, O'Brien J, Hector AL, Lawes G, Seshadri R, Ramirez AP. Large low-temperature specific heat in pyrochlore Bi2 Ti2 O7 Physical Review B - Condensed Matter and Materials Physics. 79. DOI: 10.1103/Physrevb.79.224111  0.343
2009 Lawes G, Kimura T, Varma CM, Subramanian MA, Rogado N, Cava RJ, Ramirez AP. Magnetodielectric effects at magnetic ordering transitions Progress in Solid State Chemistry. 37: 40-54. DOI: 10.1016/J.Progsolidstchem.2009.08.001  0.425
2009 Butko VY, So W, Lang DV, Chi X, Lashley JC, Ramirez AP. Dependence of mobility on shallow localized gap states in single-crystal organic field-effect-transistors Physica B: Condensed Matter. 404: 5221-5222. DOI: 10.1016/J.Physb.2009.08.287  0.322
2008 Manyala N, DiTusa JF, Aeppli G, Ramirez AP. Doping a semiconductor to create an unconventional metal. Nature. 454: 976-80. PMID 18719585 DOI: 10.1038/Nature07137  0.365
2008 Kimura T, Sekio Y, Nakamura H, Siegrist T, Ramirez AP. Cupric oxide as an induced-multiferroic with high-TC. Nature Materials. 7: 291-4. PMID 18297078 DOI: 10.1038/Nmat2125  0.435
2008 So WY, Lang DV, Butko VY, Chi X, Lashley JC, Ramirez AP. Dependence of mobility on density of gap states in organics by GAME aS -gate modulated activation energy spectroscopy Journal of Applied Physics. 104. DOI: 10.1063/1.2975973  0.309
2008 Ramirez AP. Quantum spin liquids: A flood or a trickle? Nature Physics. 4: 442-443. DOI: 10.1038/Nphys978  0.318
2008 Mizoguchi H, Ramirez AP, Zakharov LN, Sleight AW, Subramanian MA. Bi2/3Ce1/3Rh2O5: A new mixed-valent Rh oxide with hitherto unknown structure Journal of Solid State Chemistry. 181: 56-60. DOI: 10.1016/J.Jssc.2007.11.001  0.364
2007 Kenzelmann M, Lawes G, Harris AB, Gasparovic G, Broholm C, Ramirez AP, Jorge GA, Jaime M, Park S, Huang Q, Shapiro AY, Demianets LA. Direct transition from a disordered to a multiferroic phase on a triangular lattice. Physical Review Letters. 98: 267205. PMID 17678126 DOI: 10.1103/Physrevlett.98.267205  0.318
2007 So Wy, Wikberg JM, Lang DV, Mitrofanov O, Kloc CL, Siegrist T, Sergent AM, Ramirez AP. Mobility-independent doping in crystalline rubrene field-effect transistors Solid State Communications. 142: 483-486. DOI: 10.1016/J.Ssc.2007.03.040  0.326
2007 Mizoguchi H, Marshall WJ, Ramirez AP, Sleight AW, Subramanian MA. Partial charge ordering in the mixed-valent compound (Bi6 O5) Rh8 3 + Rh4 4 + O24 Journal of Solid State Chemistry. 180: 3463-3468. DOI: 10.1016/J.Jssc.2007.09.031  0.388
2006 Chen Y, Lynn JW, Huang Q, Woodward FM, Yildirim T, Lawes G, Ramirez AP, Rogado N, Cava RJ, Aharony A, Entin-Wohlman O, Harris AB. Complex magnetic order in the kagomé staircase compound Co3 V2 O8 Physical Review B - Condensed Matter and Materials Physics. 74. DOI: 10.1103/Physrevb.74.014430  0.363
2006 Kenzelmann M, Harris AB, Aharony A, Entin-Wohlman O, Yildirim T, Huang Q, Park S, Lawes G, Broholm C, Rogado N, Cava RJ, Kim KH, Jorge G, Ramirez AP. Field dependence of magnetic ordering in Kagomé-staircase compound Ni3 V2 O8 Physical Review B - Condensed Matter and Materials Physics. 74. DOI: 10.1103/Physrevb.74.014429  0.457
2006 Gao XPA, Boebinger GS, Mills AP, Ramirez AP, Pfeiffer LN, West KW. Spin-polarization-induced tenfold magnetoresistivity of highly metallic two-dimensional holes in a narrow GaAs quantum well Physical Review B - Condensed Matter and Materials Physics. 73. DOI: 10.1103/Physrevb.73.241315  0.695
2006 Kimura T, Lashley JC, Ramirez AP. Inversion-symmetry breaking in the noncollinear magnetic phase of the triangular-lattice antiferromagnet CuFe O2 Physical Review B - Condensed Matter and Materials Physics. 73. DOI: 10.1103/Physrevb.73.220401  0.416
2006 Viciu L, Bos JWG, Zandbergen HW, Huang Q, Foo ML, Ishiwata S, Ramirez AP, Lee M, Ong NP, Cava RJ. Crystal structure and elementary properties of Nax Co O2 (x=0.32, 0.51, 0.6, 0.75, and 0.92) in the three-layer NaCo O2 family Physical Review B - Condensed Matter and Materials Physics. 73. DOI: 10.1103/Physrevb.73.174104  0.309
2006 Morosan E, Zandbergen HW, Dennis BS, Bos JWG, Onose Y, Klimczuk T, Ramirez AP, Ong NP, Cava RJ. Superconductivity in CuxTiSe2 Nature Physics. 2: 544-550. DOI: 10.1038/Nphys360  0.381
2005 Lawes G, Harris AB, Kimura T, Rogado N, Cava RJ, Aharony A, Entin-Wohlman O, Yildirim T, Kenzelmann M, Broholm C, Ramirez AP. Magnetically driven ferroelectric order in Ni3V2O8. Physical Review Letters. 95: 087205. PMID 16196898 DOI: 10.1103/Physrevlett.95.087205  0.333
2005 Gao XP, Boebinger GS, Mills AP, Ramirez AP, Pfeiffer LN, West KW. Strongly enhanced hole-phonon coupling in the metallic state of the dilute two-dimensional hole gas. Physical Review Letters. 94: 086402. PMID 15783911 DOI: 10.1103/Physrevlett.94.086402  0.69
2005 Butko VY, Lashley JC, Ramirez AP. Low-temperature field effect in a crystalline organic material Physical Review B - Condensed Matter and Materials Physics. 72. DOI: 10.1103/Physrevb.72.081312  0.348
2005 Kimura T, Lawes G, Goto T, Tokura Y, Ramirez AP. Magnetoelectric phase diagrams of orthorhombic RMnO3 (R=Gd, Tb, and Dy) Physical Review B - Condensed Matter and Materials Physics. 71. DOI: 10.1103/Physrevb.71.224425  0.395
2005 Lawes G, Risbud AS, Ramirez AP, Seshadri R. Absence of ferromagnetism in Co and Mn substituted polycrystalline ZnO Physical Review B - Condensed Matter and Materials Physics. 71. DOI: 10.1103/Physrevb.71.045201  0.453
2005 He R, Chi X, Pinczuk A, Lang DV, Ramirez AP. Extrinsic optical recombination in pentacene single crystals: Evidence of gap states Applied Physics Letters. 87: 1-3. DOI: 10.1063/1.2135494  0.477
2005 Gao XPA, Boebinger GS, Mills AP, Ramirez AP, Pfeiffer LN, West KW. Giant hole-phonon coupling in a strongly interacting two-dimensional (2D) hole system Aip Conference Proceedings. 772: 449-450. DOI: 10.1063/1.1994177  0.53
2004 Gao XP, Boebinger GS, Mills AP, Ramirez AP, Pfeiffer LN, West KW. Temperature and magnetic-field-enhanced hall slope of a dilute 2D hole system in the ballistic regime. Physical Review Letters. 93: 256402. PMID 15697919 DOI: 10.1103/Physrevlett.93.256402  0.725
2004 Lawes G, Kenzelmann M, Rogado N, Kim KH, Jorge GA, Cava RJ, Aharony A, Entin-Wohlman O, Harris AB, Yildirim T, Huang QZ, Park S, Broholm C, Ramirez AP. Competing magnetic phases on a kagomé staircase. Physical Review Letters. 93: 247201. PMID 15697855 DOI: 10.1103/Physrevlett.93.247201  0.373
2004 Hancock JN, Turpen C, Schlesinger Z, Kowach GR, Ramirez AP. Unusual low-energy phonon dynamics in the negative thermal expansion compound ZrW2O8. Physical Review Letters. 93: 225501. PMID 15601097 DOI: 10.1103/Physrevlett.93.225501  0.303
2004 Lang DV, Chi X, Siegrist T, Sergent AM, Ramirez AP. Amorphouslike density of gap states in single-crystal pentacene. Physical Review Letters. 93: 086802. PMID 15447213 DOI: 10.1103/Physrevlett.93.086802  0.304
2004 Goto T, Kimura T, Lawes G, Ramirez AP, Tokura Y. Ferroelectricity and giant magnetocapacitance in perovskite rare-earth manganites. Physical Review Letters. 92: 257201. PMID 15245056 DOI: 10.1103/Physrevlett.92.257201  0.371
2004 Klimczuk T, Gupta V, Lawes G, Ramirez AP, Cava RJ. Effect of Ru substitution for Ni on the superconductivity in MgCNi 3-xRux Physical Review B - Condensed Matter and Materials Physics. 70: 094511-1-094511-6. DOI: 10.1103/Physrevb.70.094511  0.367
2004 Vanderah TA, Siegrist T, Roth RS, Ramirez AP, Geyer RG. Crystal structure and properties of Ba11FeTi27O 66.5 European Journal of Inorganic Chemistry. 2434-2441. DOI: 10.1002/Ejic.200300945  0.366
2003 Lawes G, Ramirez AP, Varma CM, Subramanian MA. Magnetodielectric effects from spin fluctuations in isostructural ferromagnetic and antiferromagnetic systems. Physical Review Letters. 91: 257208. PMID 14754152 DOI: 10.1103/Physrevlett.91.257208  0.424
2003 Ramirez AP. Geometric frustration: Magic moments. Nature. 421: 483. PMID 12556870 DOI: 10.1038/421483A  0.341
2003 Lawes G, Naughton B, Clark DR, Ramirez AP, Seshadri R. Magnetic Characterization of CoFe2O4 Nanoparticles Mrs Proceedings. 789. DOI: 10.1557/Proc-789-N9.8  0.338
2003 Lee WL, Haas MK, Lawes G, Ramirez AP, Gava RJ, Ong NP. Field tuning of the electron and hole populations in the ruthenate Bi 3Ru3O11 Europhysics Letters. 63: 860-866. DOI: 10.1209/Epl/I2003-00599-0  0.368
2003 Homes C, Vogt T, Shapiro S, Wakimoto S, Subramanian M, Ramirez A. Charge Transfer In High Dielectric Constant Materials Cacu(3)Ti(4)O(12) And Cdcu(3)Ti(4)O(12) Physical Review B. 67. DOI: 10.1103/Physrevb.67.092106  0.316
2003 Rogado N, Haas MK, Lawes G, Huse DA, Ramirez AP, Cava RJ. β-Cu3V2O8: Magnetic ordering in a spin-1/2 kagomé-staircase lattice Journal of Physics Condensed Matter. 15: 907-914. DOI: 10.1088/0953-8984/15/6/317  0.416
2002 Ramirez AP, Shastry BS, Hayashi A, Krajewski JJ, Huse DA, Cava RJ. Multiple field-induced phase transitions in the geometrically frustrated dipolar magnet: Gd(2) Ti(2)O(7). Physical Review Letters. 89: 067202. PMID 12190608 DOI: 10.1103/Physrevlett.89.067202  0.404
2002 Gao XP, Mills AP, Ramirez AP, Pfeiffer LN, West KW. Weak-localization-like temperature-dependent conductivity of a dilute two-dimensional hole gas in a parallel magnetic field. Physical Review Letters. 89: 016801. PMID 12097059 DOI: 10.1103/Physrevlett.89.016801  0.675
2002 Gao XP, Mills AP, Ramirez AP, Pfeiffer LN, West KW. Two-dimensional metal in a parallel magnetic field. Physical Review Letters. 88: 166803. PMID 11955247 DOI: 10.1103/Physrevlett.88.166803  0.651
2002 Nath A, Klencsár Z, Kuzmann E, Homonnay Z, Vértes A, Simopoulos A, Devlin E, Kallias G, Ramirez AP, Cava RJ. Nanoscale magnetism in the chalcogenide spinel FeCr2S4: Common origin of colossal magnetoresistivity Physical Review B. 66: 2124011-2124014. DOI: 10.1103/Physrevb.66.212401  0.377
2002 Rogado N, Huang Q, Lynn JW, Ramirez AP, Huse D, Cava RJ. BaNi2V2O8: A two-dimensional honeycomb antiferromagnet Physical Review B. 65. DOI: 10.1103/Physrevb.65.144443  0.401
2002 Koitzsch A, Blumberg G, Gozar A, Dennis B, Ramirez AP, Trebst S, Wakimoto S. Antiferromagnetism in CaCu 3 Ti 4 O 12 studied by magnetic Raman spectroscopy Physical Review B. 65: 52406. DOI: 10.1103/Physrevb.65.052406  0.402
2002 Muzzy LE, Avdeev M, Lawes G, Haas MK, Zandbergen HW, Ramirez AP, Jorgensen JD, Cava RJ. Structure and superconductivity in Zr-stabilized, nonstoichiometric molybdenum diboride Physica C: Superconductivity and Its Applications. 382: 153-165. DOI: 10.1016/S0921-4534(02)01861-0  0.374
2002 Rogado N, Lawes G, Huse DA, Ramirez AP, Cava RJ. The Kagomé-staircase lattice: Magnetic ordering in Ni3V2O8 and Co3V2O8 Solid State Communications. 124: 229-233. DOI: 10.1016/S0038-1098(02)00597-5  0.456
2002 Kim YJ, Wakimoto S, Shapiro SM, Gehring PM, Ramirez AP. Neutron scattering study of antiferromagnetic order in CaCu3Ti4O12 Solid State Communications. 121: 625-629. DOI: 10.1016/S0038-1098(02)00061-3  0.412
2002 Hayward MA, Ramirez AP, Cava RJ. Structure, stoichiometry, and properties of the chimney-ladder phases Ru2Ge3+x (0 < x < 1) Journal of Solid State Chemistry. 166: 389-394. DOI: 10.1006/Jssc.2002.9611  0.327
2001 Khalifah P, Nelson KD, Jin R, Mao ZQ, Liu Y, Huang Q, Gao XP, Ramirez AP, Cava RJ. Non-Fermi-liquid behaviour in La4Ru6O19. Nature. 411: 669-71. PMID 11395763 DOI: 10.1038/35079534  0.384
2001 He T, Huang Q, Ramirez AP, Wang Y, Regan KA, Rogado N, Hayward MA, Haas MK, Slusky JS, Inumara K, Zandbergen HW, Ong NP, Cava RJ. Superconductivity in the non-oxide perovskite MgCNi3. Nature. 411: 54-6. PMID 11333973 DOI: 10.1038/35075014  0.43
2001 Hagemann IS, Huang Q, Gao XP, Ramirez AP, Cava RJ. Geometric magnetic frustration in Ba(2)Sn(2)Ga(3)ZnCr(7)O(22): a two-dimensional spinel based Kagomé lattice. Physical Review Letters. 86: 894-7. PMID 11177967 DOI: 10.1103/Physrevlett.86.894  0.413
2001 Siddharthan R, Shastry BS, Ramirez AP. Spin ordering and partial ordering in holmium titanate and related systems Physical Review B - Condensed Matter and Materials Physics. 63: 1844121-18441210. DOI: 10.1103/Physrevb.63.184412  0.397
2001 Roy M, Mitchell JF, Ramirez AP, Schiffer P. Low-temperature magnetothermodynamics of Pr0.7Ca0.3MnO3 Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties. 81: 417-431. DOI: 10.1080/13642810110033818  0.652
2001 Hayward MA, Haas MK, Ramirez AP, He T, Regan KA, Rogado N, Inumaru K, Cava RJ. The suppression of superconductivity in MgCNi3 by Ni-site doping Solid State Communications. 119: 491-495. DOI: 10.1016/S0038-1098(01)00303-9  0.381
2000 Ramirez AP, Hessen B, Winklemann M. Entropy balance and evidence for local spin singlets in a Kagome-like magnet Physical Review Letters. 84: 2957-60. PMID 11018985 DOI: 10.1103/Physrevlett.84.2957  0.411
2000 Gammel PL, Barber B, Lopez D, Ramirez AP, Bishop DJ, Bud'ko SL, Canfield PC. Enhanced critical currents of superconducting ErNi2B2C in the ferromagnetically ordered state Physical Review Letters. 84: 2497-500. PMID 11018919 DOI: 10.1103/PhysRevLett.84.2497  0.309
2000 Hagemann IS, Khalifah PG, Ramirez AP, Cava RJ. Geometric magnetic frustration in olivines Physical Review B. 62: R771-R774. DOI: 10.1103/Physrevb.62.R771  0.437
2000 Roy M, Mitchell JF, Ramirez AP, Schiffer P. Soft spin waves in the low-temperature thermodynamics of Pro0.7Ca0.3MnO3 Physical Review B - Condensed Matter and Materials Physics. 62: 13876-13879. DOI: 10.1103/PhysRevB.62.13876  0.513
2000 Rosenkranz S, Ramirez AP, Hayashi A, Cava RJ, Siddharthan R, Shastry BS. Crystal-field interaction in the pyrochlore magnet Ho2Ti2O7 Journal of Applied Physics. 87: 5914-5916. DOI: 10.1063/1.372565  0.381
2000 Young DP, Brown CL, Khalifah P, Cava RJ, Ramirez AP. Thermoelectric properties of Ag3AuTe2 Journal of Applied Physics. 88: 5221-5224. DOI: 10.1063/1.1316057  0.349
2000 Ramirez AP, Broholm CL, Cava RJ, Kowach GR. Geometrical frustration, spin ice and negative thermal expansion - the physics of underconstraint Physica B: Condensed Matter. 280: 290-295. DOI: 10.1016/S0921-4526(99)01695-6  0.38
2000 Ramirez AP, Subramanian MA, Gardel M, Blumberg G, Li D, Vogt T, Shapiro SM. Giant dielectric constant response in a copper-titanate Solid State Communications. 115: 217-220. DOI: 10.1016/S0038-1098(00)00182-4  0.329
1999 Mills AP, Ramirez AP, Pfeiffer LN, West KW. Nonmonotonic Temperature-Dependent Resistance In Low Density 2D Hole Gases Physical Review Letters. 83: 2805-2808. DOI: 10.1103/Physrevlett.83.2805  0.571
1999 Siddharthan R, Shastry BS, Ramirez AP, Hayashi A, Cava RJ, Rosenkranz S. Ising Pyrochlore Magnets: Low-Temperature Properties, "Ice Rules," and Beyond Physical Review Letters. 83: 1854-1857. DOI: 10.1103/Physrevlett.83.1854  0.387
1999 Ramirez AP, Varma CM, Fisk Z, Smith JL. Fermi-liquid renormalization in the superconducting state of UBe13 Philosophical Magazine Part B. 79: 111-117. DOI: 10.1080/13642819908206785  0.441
1999 Mastronardi K, Young D, Wang C, Khalifah P, Cava RJ, Ramirez AP. Antimonides with the half-Heusler structure: New thermoelectric materials Applied Physics Letters. 74: 1415-1417. DOI: 10.1063/1.123596  0.327
1999 Ramirez AP. Cohabitation in the cuprates Nature. 399: 527-528. DOI: 10.1038/21075  0.366
1999 Ramirez AP, Hayashi A, Cava RJ, Siddharthan R, Shastry BS. Zero-point entropy in 'spin ice' Nature. 399: 333-335. DOI: 10.1038/20619  0.333
1999 Eskildsen MR, Harada K, Gammel PL, Andersen NH, Ernst G, Ramirez AP, Bishop DJ, Mortensen K, Canfield PC. Hysteresis in the field-induced magnetic structure in TmNi2B2C Physica B-Condensed Matter. 259: 582-583. DOI: 10.1016/S0921-4526(98)00732-7  0.389
1999 Earle SA, Ramirez AP, Cava RJ. The effect of gallium substitution for iron on the magnetic properties of hydronium iron jarosite Physica B-Condensed Matter. 262: 199-204. DOI: 10.1016/S0921-4526(98)00165-3  0.356
1998 Ramirez AP, Kowach GR. Large Low Temperature Specific Heat in the Negative Thermal Expansion Compound ZrW 2 O 8 Physical Review Letters. 80: 4903-4906. DOI: 10.1103/Physrevlett.80.4903  0.353
1998 Roy M, Mitchell JF, Ramirez AP, Schiffer P. Doping-induced transition from double exchange to charge order inLa1−xCaxMnO3nearx=0.50 Physical Review B. 58: 5185-5188. DOI: 10.1103/Physrevb.58.5185  0.606
1998 Ernst G, Broholm C, Kowach GR, Ramirez AP. Phonon density of states and negative thermal expansion in ZrW2O8 Nature. 396: 147-149. DOI: 10.1038/24115  0.352
1998 Siegrist T, Vanderahb TA, Ramirez AP, Geyer RG, Roth RS. Crystal structure and properties of Ba5Fe4Ti10O31 Journal of Alloys and Compounds. 274: 169-178. DOI: 10.1016/S0925-8388(98)00534-9  0.332
1998 Subramanian MA, Ramirez AP, Kwei GH. Colossal magnetoresistance behavior in manganese oxides: pyrochlore versus perovskite Solid State Ionics. 108: 185-191. DOI: 10.1016/S0167-2738(98)00038-1  0.351
1997 Ramirez AP, Subramanian MA. Large enhancement of magnetoresistance in Tl2Mn2O7: Pyrochlore versus perovskite Science. 277: 546-549. DOI: 10.1126/Science.277.5325.546  0.388
1997 Visser DW, Ramirez AP, Subramanian MA. Thermal Conductivity of Manganite Perovskites: Colossal Magnetoresistance as a Lattice-Dynamics Transition Physical Review Letters. 78: 3947-3950. DOI: 10.1103/Physrevlett.78.3947  0.406
1997 Palstra T, Ramirez AP, Cheong SW, Zegarski BR, Schiffer P, Zaanen J. Transport mechanisms in doped LaMnO3 Physical Review B. 56: 5104-5107. DOI: 10.1103/Physrevb.56.5104  0.51
1997 Hill JP, Feng Q, Harris QJ, Birgeneau RJ, Ramirez AP, Cassanho A. Phase-transition behavior in the random-field antiferromagnet Fe0.5Zn0.5F2 Physical Review B - Condensed Matter and Materials Physics. 55: 356-369. DOI: 10.1103/Physrevb.55.356  0.536
1997 Subramanian MA, Greedan JE, Raju NP, Ramirez AP, Sleight AW. Structure, magnetism and colossal magnetoresistance behavior in A2Mn2O7 pyrochlores (A = Dy-Lu, Y, Sc, in or Tl) Journal De Physique. Iv : Jp. 7: C1-625-C1-628. DOI: 10.1051/Jp4:19971258  0.425
1997 Hohl H, Ramirez AP, Palstra TTM, Bucher E. Thermoelectric and magnetic properties of Cr1 − xVxSi2 solid solutions Journal of Alloys and Compounds. 248: 70-76. DOI: 10.1016/S0925-8388(96)02646-1  0.349
1997 Eskildsen MR, Gammel PL, Barber BP, Ramirez AP, Bishop DJ, Andersen NH, Mortensen K, Canfield PC. Square to hexagonal symmetry transition of the flux line lattice in YNi2B2C for different field orientations Physica B-Condensed Matter. 241: 811-813. DOI: 10.1016/S0921-4526(97)00725-4  0.347
1996 Birgeneau RJ, Feng Q, Harris QJ, Hill JP, Ramirez AP. Birgeneau et al. Reply. Physical Review Letters. 77: 2342-2343. PMID 10061927 DOI: 10.1103/Physrevlett.77.2342  0.38
1996 Schiffer P, Ramirez AP, Franklin KN, Cheong SW. Interaction-Induced Spin Coplanarity in a Kagomé Magnet: SrCr9pGa 12-9pO19. Physical Review Letters. 77: 2085-2088. PMID 10061853 DOI: 10.1103/Physrevlett.77.2085  0.605
1996 Ramirez AP, Schiffer P, Cheong SW, Chen CH, Bao W, Palstra TT, Gammel PL, Bishop DJ, Zegarski B. Thermodynamic and electron diffraction signatures of charge and spin ordering in La1- xCaxMnO3. Physical Review Letters. 76: 3188-3191. PMID 10060897 DOI: 10.1103/Physrevlett.76.3188  0.369
1996 Subramanian MA, Toby BH, Ramirez AP, Marshall WJ, Sleight AW, Kwei GH. Colossal Magnetoresistance Without Mn3+/Mn4+ Double Exchange in the Stoichiometric Pyrochlore Tl2Mn2O7 Science (New York, N.Y.). 273: 81-4. PMID 8688054 DOI: 10.1126/Science.273.5271.81  0.415
1996 Lee SH, Broholm C, Aeppli G, Ramirez AP, Perring TG, Carlile CJ, Adams M, Jones TJL, Hessen B. Spin-glass and non-spin-glass features of a geometrically frustrated magnet Europhysics Letters. 35: 127-132. DOI: 10.1209/Epl/I1996-00543-X  0.4
1996 Yaron U, Gammel PL, Ramirez AP, Huse DA, Bishop DJ, Goldman AI, Stassis C, Canfield PC, Mortensen K, Eskildsen MR. Microscopic coexistence of magnetism and superconductivity in ErNi2B2C Nature. 382: 236-238. DOI: 10.1038/382236A0  0.446
1996 Ramirez AP. Geometrical frustration in magnetism Czechoslovak Journal of Physics. 46: 3247-3254. DOI: 10.1007/Bf02548137  0.358
1995 Birgeneau RJ, Feng Q, Harris QJ, Hill JP, Ramirez AP, Thurston TR. X-ray and neutron scattering, magnetization, and heat capacity study of the 3D random field ising model. Physical Review Letters. 75: 1198-1201. PMID 10060230 DOI: 10.1103/PhysRevLett.75.1198  0.449
1995 Isaacs ED, Zschack P, Broholm CL, Burns C, Aeppli G, Ramirez AP, Palstra TT, Erwin RW, Stücheli N, Bucher E. Antiferromagnetism and its relation to the superconducting phases of UPt3. Physical Review Letters. 75: 1178-1181. PMID 10060225 DOI: 10.1103/Physrevlett.75.1178  0.441
1995 Radaelli PG, Cox DE, Marezio M, Cheong SW, Schiffer PE, Ramirez AP. Simultaneous structural, magnetic, and electronic transitions in La1-xCaxMnO3 with x=0.25 and 0.50. Physical Review Letters. 75: 4488-4491. PMID 10059921 DOI: 10.1103/Physrevlett.75.4488  0.332
1995 Schiffer P, Ramirez AP, Bao W, Cheong SW. Low temperature magnetoresistance and the magnetic phase diagram of La1-xCaxMnO3. Physical Review Letters. 75: 3336-3339. PMID 10059558 DOI: 10.1103/Physrevlett.75.3336  0.631
1995 Schiffer P, Ramirez AP, Huse DA, Gammel PL, Yaron U, Bishop DJ, Valentino AJ. Frustration induced spin freezing in a site-ordered magnet: Gadolinium gallium garnet. Physical Review Letters. 74: 2379-2382. PMID 10057913 DOI: 10.1103/Physrevlett.74.2379  0.39
1995 Aeppli G, Lee S, Broholm C, Perring TG, Adams M, Carlile C, Taylor AD, Ramirez AP, Hessen B. Magnetic freezing and fluctuations in the Kagomé compound SrCr8 - x Ga4 + xO19 Physica B: Physics of Condensed Matter. 213: 142-145. DOI: 10.1016/0921-4526(95)00086-O  0.363
1995 Ramirez AP, Schins AG, Arts AFM, de Wijn HW. Specific-heat study of the two-dimensional frustrated ferromagnet Rb2Cu1-xCoxF4 Journal of Magnetism and Magnetic Materials. 140: 1713-1714. DOI: 10.1016/0304-8853(94)00629-6  0.424
1994 Zhou O, Fleming RM, Murphy DW, Chen CH, Haddon RC, Ramirez AP, Glarum SH. Defects in carbon nanostructures. Science (New York, N.Y.). 263: 1744-7. PMID 17795381 DOI: 10.1126/Science.263.5154.1744  0.307
1994 Ramirez AP, Haddon RC, Zhou O, Fleming RM, Zhang J, McClure SM, Smalley RE. Magnetic susceptibility of molecular carbon: nanotubes and fullerite. Science (New York, N.Y.). 265: 84-6. PMID 17774693 DOI: 10.1126/Science.265.5168.84  0.329
1994 Schiffer P, Ramirez AP, Huse DA, Valentino AJ. Investigation of the field induced antiferromagnetic phase transition in the frustrated magnet: Gadolinium gallium garnet. Physical Review Letters. 73: 2500-2503. PMID 10057075 DOI: 10.1103/Physrevlett.73.2500  0.613
1994 Ramirez AP, Cheong SW, Kaplan ML. Specific heat of defects in Haldane systems Y2BaNiO5 and NENP: Absence of free spin-1/2 excitations. Physical Review Letters. 72: 3108-3111. PMID 10056069 DOI: 10.1103/Physrevlett.72.3108  0.301
1994 Cava RJ, Batlogg B, van Dover RB, Ramirez AP, Krajewski JJ, Peck WF, Rupp LW. Trivalent rare earths in layered (LX)1.15NbX2 chalcogenides. Physical Review. B, Condensed Matter. 49: 6343-6345. PMID 10011627 DOI: 10.1103/Physrevb.49.6343  0.305
1994 Ramirez AP, Cava RJ, Krajewski JJ, Peck WF. Ground states of a triangular copper oxide system. Physical Review. B, Condensed Matter. 49: 16082-16085. PMID 10010755 DOI: 10.1103/Physrevb.49.16082  0.362
1994 Ramirez AP. Strongly Geometrically Frustrated Magnets Annual Review of Materials Science. 24: 453-480. DOI: 10.1146/Annurev.Ms.24.080194.002321  0.452
1994 Isaacs ED, Zschack P, Ramirez AP, Oglesby CS, Bucher E. Antiferromagnetic order in superconducting UPt3: An x-ray magnetic scattering study (invited) Journal of Applied Physics. 76: 6133-6136. DOI: 10.1063/1.358330  0.423
1994 Ramirez AP. Superconductivity in A3C60 Physica B: Physics of Condensed Matter. 199: 596-599. DOI: 10.1016/0921-4526(94)91916-X  0.343
1994 Chandra P, Ramirez AP, Coleman P, Brück E, Menovsky AA, Fisk Z, Bucher E. Nonlinear susceptibility measurements in heavy fermion systems Physica B: Physics of Condensed Matter. 199: 426-429. DOI: 10.1016/0921-4526(94)91858-9  0.347
1994 Mason TE, Aeppli G, Hayden SM, Ramirez AP, Mook HA. Magnetic fluctuations in superconducting La2 - xSrxCuO4 Physica B: Physics of Condensed Matter. 199: 284-287. DOI: 10.1016/0921-4526(94)91813-9  0.434
1994 Kortan AR, Kopylov N, Özdas E, Ramirez AP, Fleming RM, Haddon RC. Strontium doped fullerite compounds Chemical Physics Letters. 223: 501-505. DOI: 10.1016/0009-2614(94)00495-1  0.331
1993 Palstra TT, Steigerwald ML, Ramirez AP, Kwon Y, Stuczynski SM, Schneemeyer LF, Waszczak JV, Zaanen J. Electron correlations on a mesoscopic scale: Magnetic properties of transition metal telluride cluster compounds. Physical Review Letters. 71: 1768-1771. PMID 10054493 DOI: 10.1103/Physrevlett.71.1768  0.411
1993 Zhou O, Fleming RM, Murphy DW, Rosseinsky MJ, Ramirez AP, van Dover RB, Haddon RC. Increased transition temperature in superconducting Na2CsC60 by intercalation of ammonia Nature. 362: 433-435. DOI: 10.1038/362433A0  0.386
1993 Cava RJ, Zandbergen HW, Ramirez AP, Takagi H, Chen CT, Krajewski JJ, Peck WF, Waszczak JV, Meigs G, Roth RS, Schneemeyer LF. LaCuO25+x and YCuO2.5+x Delafossites: Materials with Triangular Cu2+δ Planes Journal of Solid State Chemistry. 104: 437-452. DOI: 10.1006/Jssc.1993.1179  0.319
1992 Cameron TS, Haddon RC, Mattar SM, Parsons S, Passmore J, Ramirez AP. Preparation and crystal structure of the paramagnetic solid F3CCSSSCCF3AsF6: Implications for the identity of RCSSCR•+ Journal of the Chemical Society, Dalton Transactions. 1563-1572. DOI: 10.1039/Dt9920001563  0.33
1992 Kortan AR, Kopylov N, Glarum S, Gyorgy EM, Ramirez AP, Fleming RM, Zhou O, Thiel FA, Trevor PL, Haddon RC. Superconductivity in barium fulleride Nature. 360: 566-568. DOI: 10.1038/360566A0  0.349
1992 Kortan AR, Kopylov N, Glarum S, Gyorgy EM, Ramirez AP, Fleming RM, Thiel FA, Haddon RC. Superconductivity at 8.4 K in calcium-doped C60 Nature. 355: 529-532. DOI: 10.1038/355529A0  0.341
1992 Cameron TS, Haddon RC, Mattar SM, Parsons S, Passmore J, Ramirez AP. Synthesis, characterization, and x-ray crystal structure of the paramagnetic solid 5-(trifluoromethyl)-1,2,3,4-trithiazolium hexafluoroarsenate, containing the novel, planar 7.pi. CF3CNSSS+.bul. radical cation Inorganic Chemistry. 31: 2274-2279. DOI: 10.1021/Ic00037A050  0.346
1992 Murphy DW, Rosseinsky MJ, Fleming RM, Tycko R, Ramirez AP, Haddon RC, Siegrist T, Dabbagh G, Tully JC, Walstedt RE. Synthesis and characterization of alkali metal fullerides: AxC60 Journal of Physics and Chemistry of Solids. 53: 1321-1332. DOI: 10.1016/0022-3697(92)90230-B  0.347
1991 Tycko R, Dabbagh G, Rosseinsky MJ, Murphy DW, Fleming RM, Ramirez AP, Tully JC. 13C NMR Spectroscopy of KxC60: Phase Separation, Molecular Dynamics, and Metallic Properties. Science (New York, N.Y.). 253: 884-6. PMID 17751823 DOI: 10.1126/Science.253.5022.884  0.366
1991 Ramirez AP, Siegrist T, Palstra TT, Garrett JD, Bruck E, Menovsky AA, Mydosh JA. Superconducting phases of URu2Si2. Physical Review. B, Condensed Matter. 44: 5392-5395. PMID 9998368 DOI: 10.1103/Physrevb.44.5392  0.332
1991 Haddon RC, Glarum SH, Chichester SV, Ramirez AP, Zimmerman NM. Microwave-loss studies of organic superconductors. Physical Review. B, Condensed Matter. 43: 2642-2647. PMID 9997555 DOI: 10.1103/Physrevb.43.2642  0.3
1991 Lyons KB, Kwo J, Dillon JF, Espinosa GP, Mcglashan Powell M, Ramirez AP, Schneemeyer LF. The search for circular dichroism in high Tc superconductors (abstract) Journal of Applied Physics. 69: 5205. DOI: 10.1063/1.348075  0.302
1991 Cameron TS, Haddon RC, Mattar SM, Parsons S, Passmore J, Ramirez AP. The synthesis, characterization, X-ray crystal structure and solution ESR spectrum of the paramagnetic solid, 4,5-bis(trifluoromethyl)-1,2,3-trithiolium hexafluorarsenate: Implications for the identity of '1,2-dithiete' cations Journal of the Chemical Society, Chemical Communications. 358-360. DOI: 10.1039/C39910000358  0.304
1991 Fleming RM, Ramirez AP, Rosseinsky MJ, Murphy DW, Haddon RC, Zahurak SM, Makhija AV. Relation of structure and superconducting transition temperatures in A3C60 Nature. 352: 787-788. DOI: 10.1038/352787A0  0.369
1991 Fleming RM, Rosseinsky MJ, Ramirez AP, Murphy DW, Tully JC, Haddon RC, Siegrist T, Tycko R, Glarum SH, Marsh P, Dabbagh G, Zahurak SM, Makhija AV, Hampton C. Preparation and structure of the alkali-metal fulleride A4C60 Nature. 352: 701-703. DOI: 10.1038/352701A0  0.338
1991 Hebard AF, Rosseinsky MJ, Haddon RC, Murphy DW, Glarum SH, Palstra T, Ramirez AP, Kortan AR. Superconductivity at 18 K in potassium-doped C60 Nature. 350: 600-601. DOI: 10.1038/350600A0  0.353
1987 Ramirez AP, Schneemeyer LF, Waszczak JV. Specific heat near TN in (Pr, Nd, Sm, Gd, and Dy)Ba2Cu3O7: Evidence for spin-exchange-driven ordering. Physical Review. B, Condensed Matter. 36: 7145-7147. PMID 9942446 DOI: 10.1103/Physrevb.36.7145  0.38
1987 Batlogg B, Bishop DJ, Bucher E, Golding B, Ramirez AP, Fisk Z, Smith JL, Ott HR. Superconductivity and heavy fermions Journal of Magnetism and Magnetic Materials. 63: 441-446. DOI: 10.1016/0304-8853(87)90632-9  0.435
1986 Ramirez AP, Batlogg B, Fisk Z. Specific heat of YbBe13. Physical Review. B, Condensed Matter. 34: 1795-1796. PMID 9939833 DOI: 10.1103/Physrevb.34.1795  0.326
1985 Ramirez AP, Wolf WP. Specific heat of CsNiF3. Physical Review. B, Condensed Matter. 32: 1639-1642. PMID 9937208 DOI: 10.1103/PhysRevB.32.1639  0.449
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